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Veronika [31]
3 years ago
10

On a coordinate plane, an exponential function approaches y = 0 in quadrant 2 and increases into quadrant 1. It goes through (ne

gative 1, 0.25), (0, 0.5), (1, 1).
Which exponential function is represented by the graph?

f(x) = 2(one-half) Superscript x
f(x) = One-half(2)x
f(x) = One-half (one-half) superscript x
f(x) = 2(2)x
Mathematics
2 answers:
saveliy_v [14]3 years ago
6 0

Answer:

           \large\boxed{f(x)=(1/2)2^x}

Explanation:

You can just verify the outputs of the four functions for x = -1, x = 0.25, and x = 1.

1. f(x)=2(1/2)^x

x=-1\implies f(x)=2(1/2)^{-1}=2(2)=4

Then, this function does not go through (-1, 0.25)

2. f(x)=(1/2)2^x

x=-1\implies f(x)=(1/2)(2)^{-1}=(1/2)(1/2)=1/4=0.25\\ \\ x=0\implies f(x)=(1/2)(2)^0=1/2=0.5\\ \\ x=1\implies f(x)=(1/2)(2)^1=(1/2)(2)=1

Hence, this function goes through the 3 points.

Also, you can verify that it <em>approches y = 0 in quadrant 2</em>, because when x approaches a very large negative number ( - ∞), 2^x becomes very small ( approaches zero). Therefore, this function meets all the requirements: it approaches y = 0 in quadrant 2, <em>increases into quadrant 2, and </em>g<em>oes through </em>the three given points<em>.</em>

Sholpan [36]3 years ago
6 0

Answer:

its B

Step-by-step explanation:

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